<?php // $Id: save_xml_file.class.php,v 1.5 2007/10/10 05:25:30 nicolasconnault Exp $

///////////////////////////////////////////////////////////////////////////
//																	   //
// NOTICE OF COPYRIGHT												   //
//																	   //
// Moodle - Modular Object-Oriented Dynamic Learning Environment		 //
//		  http://moodle.com											//
//																	   //
// Copyright (C) 1999 onwards Martin Dougiamas		http://dougiamas.com  //
//		   (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com  //
//																	   //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or	 //
// (at your option) any later version.								   //
//																	   //
// This program is distributed in the hope that it will be useful,	   //
// but WITHOUT ANY WARRANTY; without even the implied warranty of		//
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		 //
// GNU General Public License for more details:						  //
//																	   //
//		  http://www.gnu.org/copyleft/gpl.html						 //
//																	   //
///////////////////////////////////////////////////////////////////////////

/// This class will save one edited xml file

class save_xml_file extends XMLDBAction {

	/**
	 * Init method, every subclass will have its own
	 */
	function init() {
		parent::init();

	/// Set own custom attributes

	/// Get needed strings
		$this->loadStrings(array(
			'filenotwriteable' => 'xmldb'
		));
	}

	/**
	 * Invoke method, every class will have its own
	 * returns true/false on completion, setting both
	 * errormsg and output as necessary
	 */
	function invoke() {
		parent::invoke();

		$result = true;

	/// Set own core attributes
		$this->does_generate = ACTION_NONE;

	/// These are always here
		global $CFG, $XMLDB;

	/// Do the job, setting result as needed

	/// Get the dir containing the file
		$dirpath = required_param('dir', PARAM_PATH);
		$dirpath = $CFG->dirroot . stripslashes_safe($dirpath);

	/// Get the edited dir
		if (!empty($XMLDB->editeddirs)) {
			if (isset($XMLDB->editeddirs[$dirpath])) {
				$editeddir =& $XMLDB->editeddirs[$dirpath];
			}
		}
	/// Copy the edited dir over the original one
		if (!empty($XMLDB->dbdirs)) {
			if (isset($XMLDB->dbdirs[$dirpath])) {
				$XMLDB->dbdirs[$dirpath] = unserialize(serialize($editeddir));
				$dbdir =& $XMLDB->dbdirs[$dirpath];
			}
		}

	/// Chech for perms
		if (!is_writeable($dirpath . '/install.xml')) {
			$this->errormsg = $this->str['filenotwriteable'] . '(' . $dirpath . '/install.xml)';
			return false;
		}

	/// Save the original dir
		$result = $dbdir->xml_file->saveXMLFile();

		if ($result) {
		/// Delete the edited dir
			unset ($XMLDB->editeddirs[$dirpath]);
		/// Unload de originaldir
			unset($XMLDB->dbdirs[$dirpath]->xml_file);
			unset($XMLDB->dbdirs[$dirpath]->xml_loaded);
			unset($XMLDB->dbdirs[$dirpath]->xml_changed);
			unset($XMLDB->dbdirs[$dirpath]->xml_exists);
			unset($XMLDB->dbdirs[$dirpath]->xml_writeable);
		} else {
			$this->errormsg = 'Error saving XML file (' . $dirpath . ')';
			return false;
		}

	/// Launch postaction if exists (leave this here!)
		if ($this->getPostAction() && $result) {
			return $this->launch($this->getPostAction());
		}

	/// Return ok if arrived here
		return $result;
	}
}
?>
